I seem to have got myself another problem now

I don't know whether you know about qfacebookconnect itself?
But I have got the sample application working fine now, so instead of just modifying that for what I wanted to do, I made my own project and basically added what I needed from the sample application.

At first I just changed the facebook api key and secret in the sample, to connect to my own facebook app, and that worked.
But in my own one when I try and tell the application to login to facebook it just terminates unexpectedly before loading the facebook login page. When I debug it I get a segmentation fault error on clicking the button :\

I have been through both the sample application and my own one to compare the login methods and the various facebook api methods and as it stands they are all the same.